Home / 1,120,681.80-1,679,054.40-919,915.20

Finding the Fourth Proportional to 1,120,681.80, 1,679,054.40 and 919,915.20

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Solution

The fourth proportional to 1,120,681.80, 1,679,054.40 and 919,915.20 is: 1,378,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,681.80 : 1,679,054.40 = 919,915.20 : x
  2. Step 2: Convert to fraction form
    1,120,681.80/1,679,054.40 = 919,915.20/x
  3. Step 3: Cross multiply
    1,120,681.80x = 1,679,054.40 × 919,915.20
  4. Step 4: Simplify right side
    1,120,681.80x = 1,544,587,664,186.88
  5. Step 5: Solve for x
    x = 1,544,587,664,186.88/1,120,681.80
  6. Step 6: Final answer
    x = 1,378,257.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.